In function CFF_Init_Face(), logical or the face flags with

FT_FACE_FLAG_GLYPH_NAMES only if FT_CONFIG_OPTION_NO_GLYPH_NAMES is
not defined.  This is to add support for getting a glyph name from a
glyph index vi FT_Get_Glyph_Name().

src/cff/cffobjs.c

@@ -427,6 +427,10 @@
           flags |= FT_FACE_FLAG_KERNING;
 #endif
 
+#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES
+        flags |= FT_FACE_FLAG_GLYPH_NAMES;
+#endif
+
         root->face_flags = flags;
 
         /*******************************************************************/